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Postretirement Benefits (Tables) - Postretirement Benefits - Unfunded-Health-Care-Benefit Plans | 12 Months Ended
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May 31, 2018
Components of Net Periodic Pension and Postretirement Costs | The following table illustrates the effect on operations of these plans for the three years ended May 31, 2018:
|  | U.S. Plans |  |  | Non-U.S. Plans |
(In thousands) |  | 2018 |  | 2017 |  | 2016 |  |  | 2018 |  | 2017 |  | 2016 |
Service cost - benefits earned during the period |  | $ | - |  | $ | - |  | $ | - |  |  | $ | 1,307 |  | $ | 1,097 |  | $ | 1,061 |
Interest cost on the accumulated obligation |  |  | 173 |  |  | 229 |  |  | 235 |  |  |  | 939 |  |  | 854 |  |  | 832 |
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service (credit) |  |  | (220 | ) |  | (235 | ) |  | (247 | ) |  |  |  |  |  |  |  |  |  |
Net actuarial (gains) losses |  |  | 24 |  |  |  |  |  |  |  |  |  | 332 |  |  | 230 |  |  | 229 |
Net Postretirement Benefit (Income) Cost |  | $ | (23 | ) | $ | (6 | ) | $ | (12 | ) |  | $ | 2,578 |  | $ | 2,181 |  | $ | 2,122 |
Changes in Benefit Obligations | The changes in benefit obligations of the plans at May 31, 2018 and 2017 were as follows:
|  | U.S. Plans |  |  | Non-U.S. Plans |
(In thousands) |  | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
Accumulated postretirement benefit obligation at beginning of year |  | $ | 5,892 |  | $ | 7,653 |  |  | $ | 27,868 |  | $ | 25,420 |
Service cost |  |  |  |  |  |  |  |  |  | 1,307 |  |  | 1,097 |
Interest cost |  |  | 173 |  |  | 229 |  |  |  | 939 |  |  | 854 |
Benefit payments |  |  | (297 | ) |  | (2,383 | ) |  |  | (604 | ) |  | (529 | )
Actuarial (gains) losses |  |  | (400 | ) |  | 393 |  |  |  | 2,638 |  |  | 1,766 |
Currency exchange rate changes |  |  |  |  |  |  |  |  |  | 1,133 |  |  | (740 | )
Accumulated and accrued postretirement benefit obligation at end of year |  | $ | 5,368 |  | $ | 5,892 |  |  | $ | 33,281 |  | $ | 27,868 |
Amounts Recognized in Consolidated Balance Sheet | Amounts recognized in the Consolidated Balance Sheets for the years ended May 31, 2018 and 2017 are as follows:
|  | U.S. Plans |  |  | Non-U.S. Plans |
(In thousands) |  | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
Current liabilities |  | $ | (427 | ) | $ | (411 | ) |  | $ | (696 | ) | $ | (522 | )
Noncurrent liabilities |  |  | (4,941 | ) |  | (5,481 | ) |  |  | (32,585 | ) |  | (27,346 | )
Net Amount Recognized |  | $ | (5,368 | ) | $ | (5,892 | ) |  | $ | (33,281 | ) | $ | (27,868 | )
Pretax Net Actuarial Loss and Prior Service (Costs) Recognized in Accumulated Other Comprehensive Income (Loss) not Affecting Retained Earnings | The following table presents the pretax net actuarial gain (loss) and prior service credits recognized in accumulated other comprehensive income (loss) not affecting retained earnings:
|  | U.S. Plans |  |  | Non-U.S. Plans |
(In thousands) |  | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
Net actuarial gain (loss) |  | $ | 124 |  | $ | (299 | ) |  | $ | (9,951 | ) | $ | (7,354 | )
Prior service credits |  |  | 887 |  |  | 1,107 |  |  |  |  |  |  |  |
Total recognized in accumulated other comprehensive income not affecting retained earnings |  | $ | 1,011 |  | $ | 808 |  |  | $ | (9,951 | ) | $ | (7,354 | )
Changes Recognized in Other Comprehensive Income | The following table includes the changes recognized in other comprehensive income:
|  | U.S. Plans |  |  | Non-U.S. Plans |
(In thousands) |  | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
Changes in plan assets and benefit obligations recognized in other comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service cost |  | $ | - |  | $ | - |  |  | $ | - |  | $ | - |
Net loss (gain) arising during the year |  |  | (400 | ) |  | 393 |  |  |  | 2,638 |  |  | 1,766 |
Effect of exchange rates on amounts included in AOCI |  |  |  |  |  |  |  |  |  | 291 |  |  | (168 | )
Amounts recognized as a component of net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization or curtailment recognition of prior service credit (cost) |  |  | 220 |  |  | 234 |  |  |  |  |  |  |  |
Amortization or settlement recognition of net gain (loss) |  |  | (24 | ) |  | - |  |  |  | (332 | ) |  | (230 | )
Total recognized in other comprehensive loss (income) |  | $ | (204 | ) | $ | 627 |  |  | $ | 2,597 |  | $ | 1,368 |
Weighted-Average Assumptions used to Determine Benefit Obligations and Net Periodic and Postretirement Costs | The following weighted-average assumptions were used to determine our year-end benefit obligations and net periodic postretirement benefit costs under the plans:
|  | U.S. Plans |  |  | Non-U.S. Plans |  |  |  |  |  |  |  |  |
Year-End Benefit Obligations |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  |  |  |  |  |  |  |
Discount rate |  |  | 4.03 | % |  |  | 3.61 | % |  |  | 3.70 | % |  |  | 3.61 | % |  |  |  |  |  |  |  |
Current healthcare cost trend rate |  |  | 7.86 | % |  |  | 14.75 | % |  |  | 6.02 | % |  |  | 5.85 | % |  |  |  |  |  |  |  |
Ultimate healthcare cost trend rate |  |  | 4.36 | % |  |  | 4.36 | % |  |  | 4.20 | % |  |  | 4.20 | % |  |  |  |  |  |  |  |
Year ultimate healthcare cost trend rate will be realized |  |  | 2037 |  |  |  | 2037 |  |  |  | 2032 |  |  |  | 2030 |  |  |  |  |  |  |  |  |
|  | U.S. Plans |  |  | Non-U.S. Plans |
Net Periodic Postretirement Cost |  | 2018 |  |  | 2017 |  |  | 2016 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
Discount rate |  |  | 3.61 | % |  |  | 3.76 | % |  |  | 3.95 | % |  |  | 3.61 | % |  |  | 3.92 | % |  |  | 4.00 | %
Healthcare cost trend rate |  |  | 14.75 | % |  |  | 10.37 | % |  |  | 11.34 | % |  |  | 5.85 | % |  |  | 5.98 | % |  |  | 6.06 | %
Ultimate healthcare cost trend rate |  |  | 4.36 | % |  |  | 4.36 | % |  |  | 4.50 | % |  |  | 4.20 | % |  |  | 4.20 | % |  |  | 4.20 | %
Year ultimate healthcare cost trend rate will be realized |  |  | 2037 |  |  |  | 2037 |  |  |  | 2029 |  |  |  | 2030 |  |  |  | 2030 |  |  |  | 2030 |
Increasing or Decreasing Current Healthcare Cost Trend Rates by One Percentage would affect Accumulated Postretirement Benefit Obligation and Net Postretirement Expense | We utilize a sensitivity analysis to measure the potential impact of changes in our healthcare cost trend rate on our Consolidated Financial Statements. Increasing or decreasing current healthcare cost trend rates by 1% would affect our accumulated postretirement benefit obligation and net postretirement expense by the following amounts for the years ended May 31, 2018 and 2017:
|  | U.S. Plans |  |  | Non-U.S. Plans |
(In thousands) |  | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
1% Increase in Healthcare Cost Trend Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated benefit obligation |  | $ | 185 |  | $ | 229 |  |  | $ | 6,978 |  | $ | 6,410 |
Postretirement cost |  |  | 7 |  |  | 9 |  |  |  | 673 |  |  | 547 |
1% Decrease in Healthcare Cost Trend Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated benefit obligation |  | $ | (163 | ) | $ | (201 | ) |  | $ | (5,391 | ) | $ | (5,016 | )
Postretirement cost |  |  | (6 | ) |  | (8 | ) |  |  | (493 | ) |  | (406 | )

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